Surface Mount Transient Voltage Suppressors (TVS)
SMAJ Series
5.0 To 440 V
400W
Ratings and Characteristic Curves (TA=25°C unless otherwise noted)
Figure 1 - Peak Pulse Power Rating Curve
Figure 2 - Pulse Derating Curve
100
80
100
10
1
60
40
20
0
0.1
0.1
1
10
100
1000
10000
0
25
50
75
100
125
150
175
td - Pulse Width (μs)
TA-Ambient temperature(°C)
Figure 3 - Pulse Waveform
Figure 4 - Typical Junction Capacitance
10000
150
Bi-directional
@zero bins
TJ=25°C
tr=10µsec
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of IPPM
Peak Value
IPPM
Uni-directional
@zero bins
1000
100
100
Uni-directional @VRWM
Half Value
IPPM (IPPM/2)
50
0
10/1000µsec. Waveform
as defined by R.E.A
10
1
Tj=25°C
f=1.0MHz
Vsig=50mVp-p
Bi-directional @VRWM
100.0
tc
1.0
10.0
1000.0
0
1.0
2.0
t - Time (ms)
3.0
4.0
VBR-Reverse Breakdown Voltage (V)
Figure 5 - Steady State Power Derating Curve
Figure 6 - Maximum Non-Repetitive Surge Current
1.0
50
TJ=TJ max.
8.3 ms Single Half Sine-Wave
40
30
0.8
0.6
0.4
0.2
0.0
20
10
0
0
25
50
75
100
125
150
175
200
1
10
100
TL - Lead Temperature(°C)
Number of Cycles at 60Hz
UN Semiconductor Co., Ltd.
www.unsemi.com.tw
@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
Revision October 18, 2013
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